Built on the ruins of ancient Aztec city, Tenochtitlan, Mexico City is one of the oldest and largest in the Americas http://on.natgeo.com/2ipmddT pic.twitter.com/NL7FuPv9K0

Built on the ruins of ancient Aztec city, Tenochtitlan, Mexico City is one of the oldest and largest in the Americas http://on.natgeo.com/2ipmddT  http://pic.twitter.com/NL7FuPv9K0

https://twitter.com/NatGeoTravel/status/921398106561822720